caddy-build-push.yml

name: Build and Push Docker Image

on:
  push:
    branches: [ main ]
  pull_request:
    branches: [ main ]

jobs:
  build-and-push:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
    
    - name: Set up Docker Buildx
      uses: docker/setup-buildx-action@v1
    
    - name: Login to GitHub Container Registry
      uses: docker/login-action@v1
      with:
        registry: ghcr.io
        username: ${{ github.repository_owner }}
        password: ${{ secrets.GITHUB_TOKEN }}
    
    - name: Get Caddy version
      id: caddy_version
      run: |
        CADDY_VERSION=$(docker run --rm caddy:2-alpine caddy version | cut -d ' ' -f 1)
        echo "version=${CADDY_VERSION}" >> $GITHUB_OUTPUT
    
    - name: Build and push
      uses: docker/build-push-action@v2
      with:
        context: ./caddy
        file: ./caddy/Dockerfile
        push: true
        tags: |
          ghcr.io/${{ github.repository_owner }}/caddy:latest
          ghcr.io/${{ github.repository_owner }}/caddy:2
          ghcr.io/${{ github.repository_owner }}/caddy:2.${{ steps.caddy_version.outputs.version }}